Phil, There are some rules that allow the "decking" to be measured from the bottom of non or limited combustible materials such in steel buildings where you have the exposed insulation visible between rafters. I can't recall if there's some caveat about the structural materials needing to not be combustible, and don't have any books at home so I can't look anything up, but trying fishing in that type of pond.
On Sat, May 16, 2009 at 6:13 AM, Phil Nawrocki <[email protected]> wrote: > Sirs, > > We have a contract to install fire sprinklers in a building with 24" deep > TJI composite wood joist construction. They are 24" on center. I can find > nothing in NFPA #13 deflector rules that allow the sprinkler deflector under > obstructed construction to be below 22" from the deck. Is there any other > way to protect the area besides putting a sprinkler in each 24" wide joist > space? > > Regards, > > Phillip H. Nawrocki > Design Manager > National Fire Sprinkler, Inc. > 1544 W. Grant St. > Phoenix, AZ 85007-3314 > (602) 712-1180 Phone Ext #33 > (602) 712-1260 Fax > [email protected] > Fire Sprinklers Save Lives! > > > > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > -- Ron Greenman at home.... _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
